Install Fabric 1.21.4+ (Mod Minecraft 1.21.4) | Client Install Guide
Built specifically for the Fabric ecosystem, ensuring lightning-fast load times and minimal impact on frame rates (FPS). File name- Fullbright-Mod-Fabric-1.21.4.jar
Press Windows Key + R on your keyboard to open the Run dialogue. Install Fabric 1
The file name explicitly details exactly what this software is: File name- Fullbright-Mod-Fabric-1.21.4.jar